Jewlery has no practical benefit for humanity..Perhaps for some sort mating ritualistic things. But so will Bitcoin. Once it get's more popular, you'll attract shitloads of girls with your Bitcoin Hodler bumper sticker or t-shirt ;) Just buy the "I got rich on BTC" t-shirt. Much cheaper than jewlery.
And gold is not that much used in industry, not compared to other metals - like Silver.
I recmond hodl because Bitcoin, sustainable, destroyed or abandoned has a very good chance of reaching unpresedented levels.. 100k + I also recomend you gradually sell off your initial investment. But hodl the profit. If everything is great success! we never have to convert our btc to fiat.